Saw



0. D.'ESHELIVIAN AND W. F. BOASI.

sAw. APPLICATION FILED JAN. I7, 192I- RENEWED JUNE 9, 19.22.

1,423,843; Patented July 25, 1922.

` blade.

QM D. TISHELMANAND WILLL'E E". BOST, @F CASPER, WYOMNG.

SAW.

Speciication of Letters Eatent.

Patented July 25, i922.

Application filed January 17,l 1923, Serial No. Renewed Sinne 1922.Serial No. 567,92

To aZZ wiz-0m it mayconcem.'

Be it known that We, Oui/nn D. Estant MAN and WILLrAM Boiler, citizensof the United States, residing at Casper, in the county ot Natrona andState ol llyoming, have invented certain new and useful lin-yproveinents in Saws of which the following is a specilication. i

This invention is a novel construction ot" saw blade. ln sawing throughlumber of any appreciablethickness, unless the lumber has beenthoroughly cured, there is a tendency of the lumber to swell as thesawing operag tion progresses and cause the sides of the 35M leertl orgroove to bindagainst the laces of the( saw blade and make it difficultfor the workman to move the saw. The object oi our invention is toprovide a saw blade of such construction that as it progresses throughthe lumber the opposed Walls oi the korf will becleared so that thepinching or binding of tl e blade now frequently encountered will beovercome. This object we attain in such' a device as is illustrated inthe accompanying drawing which shows an elevation of a saw constructedin accordance with our invention.

rlhe blade l. may be or any desired' form and dimensions and is providedwith the usual cutting teeth 2 along its lower edge. 'lhe usual handle 3isA secured to one end of the blade, as shown. Saw blades now generallyconstructed are solid throughout their extent but in carrying` out ourinvention, weform in the blade longitudinal slots l which are of lessextent than the blade and are provided upon their upper edges Withsupplemental saw teeth 5. single slot may be ecient in small saws whichare used on comparatively thin lumber but with lai-oer saws intended tocut through heavy thick lumber We provide a plurality oil slots whichare spaced apart so as Vto leave a portion 6 of the web of the bladebetween the slots to serve asa brace and prevent` buckling of the Theslots may be in alinement, as shown in the lower portion ofthe drawing5and above the alined slots an upper slot may be provided in staggeredrelation to the lower slots, as clearly shown. rlhe particulararrangement ofthe slots, however, may be varied at will but in order toobtain the best results' yand prevent buckling of the blade it isdesirable to leave portions of theA blade uninterrupted to serve as aconnecting brace between the'slots, as Will be readily understood. A

lt will bel readily understood that as the sawing operation progresseswith our improved saw the supplemental teeth 5 will lbe caused to followthe main cutting teeth 2 and as the lumber swells and causes the opposedwalls of the kerf to pinch and bind upon the sides of the saw blade thesupplemental teeth will cut through the pinching or bindin portions ofsaid walls so that clearance wil be provided for the blade and thesawing operation may proceed expeditiously and uninterruptedly. rlheinvention does not add materially to the cost of the saw and doesnotintert'ere in any'pway With the ordinary use of the saw nor Withthepacking of a number of they saws in the usual manner to economize spaceintransportation.

Having thus describedthe invention, what is claimed asv new is:

1. A saw blade provided with a plurality of slots disposed in staggeredrelation with respect to each other and each provided along one edgewith teeth pointing in the same direction as the normal cutting teethand their cutting edges running parallel with that of the normal cuttingteeth.

2. A saw blade provided with a plurality of slots disposed in staggeredlapped relation with respect to each other and each provided along oneedge with teeth running substantially in the length direction of theblade. i

ln testimony whe eof we ailix our signai tures.

oLiva'a D. ESHELMAN. [L s.) Winnaar/r r. Boiler. [n s]

